I'm sorting out a recently purchased HR2 with the MGL G3 iEFIS. The CHT readings are out of sight, but luckily, I don't think the indication represents reality. The probes are, as much as I can tell, type "J" with the black sheath, white + and red -. I've set that up in the display. Durning flight, the CHTs indicate very high. If I land and immediately use an IR temperature gun to check the CHTs, they will read from 60-100 degrees less than what the display indicates. Even when waiting for the jugs to even out a bit, assuming that the bottom of the cylinder might be hotter than the top, it still indicates about 60 degrees hotter than the IR gun shows. I checked the IR gun against some boiling water and it was within 5 degrees of the expected value.
I also double checked that the RDAC XF was properly grounded to the engine itself. The Fluke measured the same ohms along the ground wire from the engine to the D9 pin as it did when the leads were touched together.
Has anyone experienced this issue, and more importantly, has anyone solved it?
I also double checked that the RDAC XF was properly grounded to the engine itself. The Fluke measured the same ohms along the ground wire from the engine to the D9 pin as it did when the leads were touched together.
Has anyone experienced this issue, and more importantly, has anyone solved it?